Antileak fountain pen



May 20, 1952 B. F. MlEssNER ANTILEAK FOUNTAIN PEN Filed May 8, 1950 simple and inexpensive manner.

Patented May 20, 1,952

UNITEDv sitesites x:PATENT OFFICE vBenjamin F. Miessner, Morristown, N. J.

ApplicaIon `May 8, 1950, Serial No. 160,624

Thisinvention relates to a new construction for a fountain pen. A great many types of pens with which I am familiar by use thereof, if the pen is not used for a few days the ink in the pen point collector will evaporate and leave in some cases, depending on the ink used, a scale so that diiculty is encountered in getting the ink to feed through to the pen point. It is therefore the principal object of my invention to provide a constructioniof a fountainpen that is antileak and one in which the above objectionable features are eliminated.

Another object of my invention is to provide a pen construction which can be operated in approximately the same manner as a lead pencil, that is to say when a little more ink is needed in the pen point, this can be obtained by slight pressure with the finger or thumb without stopping the writing operation. A further object of my invention is to obtain a construction which obtains the objects above stated in a relatively These objects togetherwith others, will no doubt appear to the user of the pen to be herein described as follows:

In the drawing wherein the different views illustrate my construction on an enlarged scale,

Figure 1 is a part sectional and part elevational view through the pen with the pen point cap removed and in position on the opposite end of the pen barrel;

Figure 2 is a sectional view taken through the pen which is turned 90 from that shown in Figure 1;

Figure 3 is a side view of the pen in the position about as shown in Figure 2:

Figure 4 is a plan view of the lever assembly used in promoting the discharge of the ink from the pen;

Figure 5 is a view of the lever construction in Figure 4 turned 180;

Figure 6 is a view on the line 6-6 of Figure 3.

Referring now to the details wherein like numbers refer to corresponding parts, one is a barrel of the pen of suitable material such as hard rubber or other satisfactory plastic material. Fitting into the open end of the barrel I by a friction joint is a closure member or hood 2, within which is closely positioned an ink feed collector 3 carrying a pen point 4. The closure member or hood 2, which is of a material similar to that of the barrel I, preferably has one end of a sleeve 5 forced thereinto, and into engagement with the inner end of the collector 3. The opposite end of the sleeve 5 extends inwardly into the iolaims. (01,120-46) 2 barrel I and has forced over it the end of a tube 6 of suitable exible material such as soft rubber for' containing not only ink but a sponge like material I for absorbing the ink and this material, may if desired, extend to some extent into a hole 8 in the ink collector 3.` The joint between the sleeve 5 and the tube 6 may be cemented to insure an ink seal at this union.

Located in a narrowl slot in the barrel I is a lever 9 one end of which I0, is preferably of a reduced thickness so when this end is pushed into a recess in the hood 2 and preferably cernented` therein, the lever 9 will have considerable flexibility. I

To the lever 9 is fastened, Aby a rivet I I, a strip I2 preferably of somewhat resilient metallic material which engages a substantial part of the length of the tube 6.

It will be seen from the construction described that when pressure is applied to the lever 9 the strip I2 will apply pressure to the wall of the tube 6 which will compress the sponge like material within the tube and cause the ink, held by the sponge to ow out through the hole 8 in the ink collector 3 and to the pen point 4.

I prefer to place the lever 9 and its associated strip I2 on what may be termed, by a right hand operator on the left side of the pen or approximately to 100 from a vertical plane taken through the pen in normal writing position. With this arrangement, when more ink is desired in the pen point 4, a slight pressure by the .thumb of the operator or user on the lever 9, as

the writer is using the pen, is all that is necessary to supply the pen point with more ink. With a left hand writer this pressure would be applied by the forenger. The pressure that is applied to the lever 9 and associated parts may be a slight continuous one or at intervals depending on the person using the pen and the speed with which the writing is made.

It is to be understood that the tube and the sponge within, can be i'llled with ink by sticking the pen end of the structure into a pen bottle and operating the lever 9.

While I have shown in the drawing of this ease, a preferred form of pen construction, a conventional type of pen with the usual pivoted lever, may be employed by filling the ink bag or container with a spongy material which is air porous and capable of taking up a quantity of ink. With this construction when ink is desired at the pen point the lever can be operated to squeeze ink from the bag.

It is to be understood that minor changes may 3 be made in the details of construction without departing from the spirit of my invention or scope of the appended claims.

I claim:

1. In a fountain pen having, a barrel carrying a closure member with an ink collector and pen point; an ink container of suitable flexible material positioned Within the barrel and having its filling end securely xed to a part carried by said closure member, a straight strip of suitable rigid material flexibly anchored at one end to said closure member and extending its full length in a slot through the barrel and a strip of suitable material fastened to the flexibly anchored* strip near its free end and extending along the length of said ink container and in contact therewith.

2. In a fountain pen having, a barrel carrying a closure member with an ink collector and pen point; an ink container of suitable flexible material positioned Within the barrel and having its filling end securely xed toa part carried by said closure member, a straight. rigid and relatively narrow strip of suitable material flexibly anchored at one end to said closure member and extending its full length in a slot through the barrel and preferably flush with the outer surface thereof and a strip of flexible material fastened to the free end of said flexibly anchored strip and engaging the ink container for a substantial portion of its length.

3. A fountain pen construction as defined in claim 2 further characterized in that the flexibly anchored member and its associated strip are located in the barrel so said member may be directly under the thumb of a user of the pen and 4 further defined in that the ink container is filled with a sponge like material which extends at least into the sleeve to which said ink container is attached.

4. A fountain pen construction as defined in claim 2 further characterized in that the flexibly anchored member and its associated strip are located in the barrel so said member may be directly under the thumb or finger of the user of the pen depending on whether or not the user is right or left handed and'further defined in that the ink container is substantially iilled with a sponge material.

BENJAMIN F. MIESSNER.

REFERENCES CITED The-fllowing references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 438,895 Raynard Oct. 21, 1890 448,360 Oliphant Mar. 17, 1891 655,736 Reisert Aug. 14, 1900 1,048,221A Smith Dec. 24, 1912 1,243,383 Bristow Oct. 16, 1917 1,870,853 Lassagne Aug. 9, 1932 1,881,447 Ford Oct. 11, 1932 FOREIGN PATENTS Number Country Date 611,819 France Oct. 12, 1926 428,727' Great Britain May 17, 1935 201,648 Switzerland Feb. 16, 1939 

